/*
 * Copyright (C) 2005 Luca Veltri - University of Parma - Italy
 *
 * This file is part of MjSip (http://www.mjsip.org)
 *
 * MjSip is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * MjSip is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with MjSip; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Author(s):
 * Luca Veltri (luca.veltri@unipr.it)
 */

package org.zoolu.net;


import android.os.Build;
import android.system.ErrnoException;
import android.util.Log;

import java.net.DatagramSocket;
import java.net.DatagramPacket;
import java.net.InetAddress;


/** UdpSocket provides a uniform interface to UDP transport protocol,
 * regardless J2SE or J2ME is used.
 */
public class UdpSocket {

    /** DatagramSocket */
    DatagramSocket socket;


    /** Creates a new UdpSocket */
    public UdpSocket(int port) throws java.net.SocketException {
        socket = new DatagramSocket(port);
    }

    /** Creates a new UdpSocket */
    public UdpSocket(int port, IpAddress ipaddr) throws java.net.SocketException
    {  socket=new DatagramSocket(port,ipaddr.getInetAddress());
    }

    /** Creates a new UdpSocket */
    UdpSocket(DatagramSocket sock)
    {  socket=sock;
    }

    /** Closes this datagram socket. */
    public void close()
    {  socket.close();
    }

    /** Gets the local address to which the socket is bound. */
    public IpAddress getLocalAddress()
    {  return new IpAddress(socket.getInetAddress());
    }

    /** Gets the port number on the local host to which this socket is bound. */
    public int getLocalPort()
    {  return socket.getLocalPort();
    }

    /** Gets the socket timeout. */
    public int getSoTimeout() throws java.net.SocketException
    {  return socket.getSoTimeout();
    }

    /** Enables/disables socket timeout with the specified timeout, in milliseconds. */
    public void setSoTimeout(int timeout) throws java.net.SocketException
    {  socket.setSoTimeout(timeout);
    }

    /** Receives a datagram packet from this socket. */
    public void receive(UdpPacket pkt) throws java.io.IOException {
        DatagramPacket dgram = pkt.getDatagramPacket();
        socket.receive(dgram);
        pkt.setDatagramPacket(dgram);
    }

    /** Sends an UDP packet from this socket. */
    public void send(UdpPacket pkt) throws java.io.IOException {
        socket.send(pkt.getDatagramPacket());
    }

    /** Converts this object to a String. */
    public String toString()
    {  //return socket.toString();
        return "UDP: " + getLocalAddress() + ":" + getLocalPort();
    }

}
